C#でExcelにコメントを追加する方法: xlsxファイル対応 Excel操作 C# ガイド

using IronXL;
using System.Linq;

WorkBook workBook = WorkBook.Create();
WorkSheet workSheet = workBook.DefaultWorkSheet;

Cell cellA1 = workSheet["A1"].First();
Cell cellD1 = workSheet["D1"].First();

// Add comments
cellA1.AddComment("Hello World!", "John Doe"); // Add comment with content and author. The comment is invisible by default.
cellD1.AddComment(null, null, true); // Add comment with no content and no author. The comment is set to be visible.

workBook.SaveAs("addComment.xlsx");

Imports IronXL
Imports System.Linq

Private workBook As WorkBook = WorkBook.Create()
Private workSheet As WorkSheet = workBook.DefaultWorkSheet

Private cellA1 As Cell = workSheet("A1").First()
Private cellD1 As Cell = workSheet("D1").First()

' Add comments
cellA1.AddComment("Hello World!", "John Doe") ' Add comment with content and author. The comment is invisible by default.
cellD1.AddComment(Nothing, Nothing, True) ' Add comment with no content and no author. The comment is set to be visible.

workBook.SaveAs("addComment.xlsx")

using IronXL;
using System;

// Load an existing workbook
WorkBook workBook = WorkBook.Load("salesData.xlsx");
WorkSheet workSheet = workBook.DefaultWorkSheet;

// Add comments to cells that meet specific criteria
for (int row = 2; row <= 10; row++)
{
    var cell = workSheet[$"D{row}"].First();
    var value = cell.DoubleValue;

    if (value > 1000)
    {
        // Add performance comment for high values
        cell.AddComment($"Excellent performance! Value: {value:C}", "Sales Manager", true);
    }
    else if (value < 500)
    {
        // Add improvement comment for low values
        cell.AddComment($"Needs attention. Current: {value:C}", "Sales Manager", false);
    }
}

// Add timestamp comment to track last update
var updateCell = workSheet["A1"].First();
updateCell.AddComment($"Last updated: {DateTime.Now:yyyy-MM-dd HH:mm}", "System");

workBook.SaveAs("salesDataWithComments.xlsx");

Imports IronXL
Imports System

' Load an existing workbook
Dim workBook As WorkBook = WorkBook.Load("salesData.xlsx")
Dim workSheet As WorkSheet = workBook.DefaultWorkSheet

' Add comments to cells that meet specific criteria
For row As Integer = 2 To 10
    Dim cell = workSheet($"D{row}").First()
    Dim value = cell.DoubleValue

    If value > 1000 Then
        ' Add performance comment for high values
        cell.AddComment($"Excellent performance! Value: {value:C}", "Sales Manager", True)
    ElseIf value < 500 Then
        ' Add improvement comment for low values
        cell.AddComment($"Needs attention. Current: {value:C}", "Sales Manager", False)
    End If
Next

' Add timestamp comment to track last update
Dim updateCell = workSheet("A1").First()
updateCell.AddComment($"Last updated: {DateTime.Now:yyyy-MM-dd HH:mm}", "System")

workBook.SaveAs("salesDataWithComments.xlsx")

using IronXL;
using System.Linq;

WorkBook workBook = WorkBook.Load("addComment.xlsx");
WorkSheet workSheet = workBook.DefaultWorkSheet;

Cell cellA1 = workSheet["A1"].First();

// Retrieve comment
var comment = cellA1.Comment;

// Edit comment
comment.Author = "Jane Doe";
comment.Content = "Bye World";
comment.IsVisible = true;

workBook.SaveAs("editComment.xlsx");

Imports IronXL
Imports System.Linq

Private workBook As WorkBook = WorkBook.Load("addComment.xlsx")
Private workSheet As WorkSheet = workBook.DefaultWorkSheet

Private cellA1 As Cell = workSheet("A1").First()

' Retrieve comment
Private comment = cellA1.Comment

' Edit comment
comment.Author = "Jane Doe"
comment.Content = "Bye World"
comment.IsVisible = True

workBook.SaveAs("editComment.xlsx")

using IronXL;
using System.Linq;

WorkBook workBook = WorkBook.Load("addComment.xlsx");
WorkSheet workSheet = workBook.DefaultWorkSheet;

Cell cellA1 = workSheet["A1"].First();

// Remove comment
cellA1.RemoveComment();

workBook.SaveAs("removeComment.xlsx");

Imports IronXL
Imports System.Linq

Private workBook As WorkBook = WorkBook.Load("addComment.xlsx")
Private workSheet As WorkSheet = workBook.DefaultWorkSheet

Private cellA1 As Cell = workSheet("A1").First()

' Remove comment
cellA1.RemoveComment()

workBook.SaveAs("removeComment.xlsx")